Printing machine



FIG. 1 is a perspective view of a printing machine showing our new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a left side elevation view thereof;

FIG. 5 is a right side elevation view thereof,

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

Broken lines in the drawings denote features of the article that are included for the purpose of illustrating context, but form no part of the claimed design. 

CLAIM The ornamental design for a printing machine, as shown and described. 